Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/heap/GCTaskRunner.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #ifndef GCTaskRunner_h
 #define GCTaskRunner_h
 
 #include "platform/ThreadSafeFunctional.h"
 #include "platform/heap/ThreadState.h"
 #include "public/platform/WebTaskRunner.h"
 #include "public/platform/WebThread.h"
 #include "public/platform/WebTraceLocation.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
 class MessageLoopInterruptor final : public BlinkGCInterruptor {
 public:
     explicit MessageLoopInterruptor(WebTaskRunner* taskRunner) : m_taskRunner(taskRunner) { }
 
     void requestInterrupt() override
     {
         // GCTask has an empty run() method. Its only purpose is to guarantee
@@ skipping 44 matching lines @@
     }
 
 private:
     int m_nesting;
 };
 
 class GCTaskRunner final {
     USING_FAST_MALLOC(GCTaskRunner);
 public:
     explicit GCTaskRunner(WebThread* thread)
-        : m_gcTaskObserver(wrapUnique(new GCTaskObserver))
+        : m_gcTaskObserver(adoptPtr(new GCTaskObserver))
         , m_thread(thread)
     {
         m_thread->addTaskObserver(m_gcTaskObserver.get());
-        ThreadState::current()->addInterruptor(wrapUnique(new MessageLoopInterruptor(thread->getWebTaskRunner())));
+        ThreadState::current()->addInterruptor(adoptPtr(new MessageLoopInterruptor(thread->getWebTaskRunner())));
     }
 
     ~GCTaskRunner()
     {
         m_thread->removeTaskObserver(m_gcTaskObserver.get());
     }
 
 private:
-    std::unique_ptr<GCTaskObserver> m_gcTaskObserver;
+    OwnPtr<GCTaskObserver> m_gcTaskObserver;
     WebThread* m_thread;
 };
 
 } // namespace blink
 
 #endif